diff --git a/.buckconfig b/.buckconfig
index 7e1b1031a794e..0ea02958a310f 100644
--- a/.buckconfig
+++ b/.buckconfig
@@ -1,7 +1,7 @@
 [java]
   src_roots = /java/client/src, /java/client/test, /java/server/src, /java/server/test
-  source_level = 7
-  target_level = 7
+  source_level = 8 
+  target_level = 8
 
 [project]
   ignore = \
diff --git a/rake-tasks/crazy_fun/mappings/java.rb b/rake-tasks/crazy_fun/mappings/java.rb
index 556be057f91a2..057b52a589ff3 100644
--- a/rake-tasks/crazy_fun/mappings/java.rb
+++ b/rake-tasks/crazy_fun/mappings/java.rb
@@ -318,8 +318,8 @@ def handle(fun, dir, args)
             :optimize             => true,
             :debug                => true,
             :nowarn               => true,
-            :source               => '1.7',
-            :target               => '1.7'
+            :source               => '1.8',
+            :target               => '1.8'
           ) { |ant|
             ant.classpath(:refid => "#{args[:name]}.path")